Is possible the same action with ProgDVB modules or even plugins?
I need access to TS/188 and then modify it. After that ProgDVB should use this modified stream instead of the original one.
Is there any sample for this purpose?

To override the built-in CSA module of ProgDVB.
Currently MD-API plugins send DCWs to ProgDVB and then it uses them to do the final decryption of the audio and video stream (using the built-in CSA module). I want to do this step myself and I want to replace it with a custom algo such as DES. So I need a stream callback like this to control the process.